Videos
The two videos below are of practical masterclasses that Agudo has given recently to demonstrate his way of working when drawing the human figure using charcoal. Please note these videos are still only available in Spanish.
In this first one he demonstrates the technique of drawing with charcoal on cloth and using blurring:
In the second one below, he applies the charcoal directly onto the paper:
The following are some interesting external links on Agudo and his work